ISUZU Cylinder Head Rubber Plug 8-94399605-0 Heat-resistant Oil-resistant OEM Standard Valve Cover Seal for FVR 6HE1 700P
Basic Properties
Place of Origin:
CHINA
Brand Name:
YIMI
Certification:
ISO/TS16949
Model Number:
FVZ34 FSR FTR 6HK1
Trading Properties
Minimum Order Quantity:
20 PCS
Price:
Negotiable
Payment Terms:
T/T
Supply Ability:
10000 pcs/month
Specifications
| Reference Format: | 8-94399-605-0 | Material: | Heat-resistant, Oil-resistant Rubber |
| Compatible Engines: | ISUZU 6HE1, 4HK1, 4HF1, 4HG1, 6HK1 | OEM Part Number: | 8-94399605-0 / 8943996050 |
| Installation Position: | Between Cylinder Head Cover And Cylinder Head | Part Type: | Engine Sealing Component / Valve Cover Seal |
| Minimum Order Quantity: | Typically 10 Pieces | Model Years: | 1994–2026 |
| High Light: | Heat-resistant Cylinder Head Rubber Plug,Oil-resistant Valve Cover Rubber Plug,OEM Standard Half-moon Seal |
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Product Description
ISUZU Cylinder Head Rubber Plug 8-94399605-0 8943996050 for FVR 6HE1 700P — OEM Standard Engine Seal
ISUZU Cylinder Head Rubber Plug 8-94399605-0 8943996050 Compatible with FVR 6HE1 700P 4HK1 4HF1 4HG1 Engine — OEM Standard Valve Cover Seal
The ISUZU Cylinder Head Rubber Plug with OEM numbers 8-94399605-0 / 8943996050 is a precision-engineered replacement designed for ISUZU FVR and 700P series heavy/medium-duty trucks, compatible with 6HE1 diesel engines. This component is a core sealing part of the engine — the Cylinder Head Rubber Plug (PLUG; CYL HD COVER) — responsible for sealing openings in the cylinder head cover to prevent oil leaks and contamination.
Numbering Note: This product number is 8-94399605-0 / 8943996050, also listed as 8-94399-605-0. Same-series numbers include 8-94399605-1 / 8943996051. Cross-reference numbers include 8978487570 and 8981638130. Brands include IZUMI and BZLP. Please verify the specific number based on actual vehicle configuration.
Working Principle
The cylinder head rubber plug (also known as "valve cover rubber plug" or "half-moon seal") is a sealing component installed on the cylinder head cover. Its working principle includes:
- Oil Sealing: The cylinder head cover houses oil for lubricating the valve train. The rubber plug creates a reliable seal at the cover openings to prevent oil leakage.
- Heat Resistance: The plug operates in high-temperature engine environments, manufactured from specialized heat-resistant and oil-resistant rubber materials.
- Contaminant Prevention: Reliable sealing prevents external dust, moisture, and other contaminants from entering the valve train area.
- Tolerance Compensation: The rubber's elasticity compensates for manufacturing tolerances and thermal expansion between the cylinder head cover and cylinder head.
Failure Symptoms
⚠️ Inspect immediately if any of these occur:
| Symptom | Probable Cause |
|---|---|
| Visible oil leakage around the cylinder head cover | Hardened, cracked, or damaged rubber plug |
| Increased oil consumption without blue smoke from exhaust | Oil leaking from the plug, not entering combustion chamber |
| Visual inspection shows hardened, cracked, swollen, or deformed plug | Material aging from long-term high-temperature exposure |
| Burning oil smell during engine operation | Leaked oil dripping onto hot exhaust components |
| Loose cylinder head cover bolts | Seal failure due to compressed or deformed plug |
Verifiable Data
🔬 Based on Industry Standards & General Validation:
✅ OE Cross-Reference Verified: Replaces OEM numbers 8-94399605-0 / 8943996050; compatible with 8978487570 and 8981638130
✅ Part Name: PLUG; CYL HD COVER
✅ Alias: Cylinder head rubber plug / Valve cover rubber plug / Half-moon seal
✅ Compatible Models: ISUZU FVR, 700P, ELF700P, NPR66, NPR70, NQR70, NPR71
✅ Extended Compatibility: ISUZU NRR, NPR, NQR, NPR-HD
✅ Compatible Engines: ISUZU 6HE1, 4HK1, 4HF1, 4HG1, 6HK1
✅ Model Years: 1994–2026
✅ Quality Grade: High Quality
✅ Brand: Supplied by IZUMI brand with 20 years of ISUZU auto parts experience; over 400 supplier network
✅ Condition: Brand New — 100% tested before shipment
✅ Warranty: Per supplier policy
✅ Delivery Time: 7–30 days
✅ Minimum Order Quantity: Typically 10 pieces
| Part Number: | 8-94399605-0 8943996050 | Product Name: | Cylinder Head Rubber Plug |
| Car Model: | FVR 6HE1 | Engine Model: | 700P |
| Condition: | 100% Brand New | Size: | Standard |
| Weight: | Standard | Origin: | China Mainland |
| Main Market: | Middle East, Asia, Africa, South America, North America & Europe | ||
| Package: | Neutral Packing Or Make It As Requested | ||
| Material: | High-strength aluminum alloy & precision bearings | ||
| Cooling Type: | Engine coolant circulation | ||
| Installation: | Direct OEM replacement | ||
| Quality Standard: | OEM equivalent / ISO quality control | ||
Vehicle & Engine Compatibility
Primary Applications:
| Brand | Model Series | Compatible Engine | Notes |
|---|---|---|---|
| ISUZU | FVR | 6HE1 | Heavy-duty truck |
| ISUZU | 700P | 6HE1 | Medium-duty truck |
| ISUZU | ELF700P | 4HK1 / 6HK1 / 4HF1 / 4HE1 / 4HG1 | Light-duty truck |
| ISUZU | NPR66 | 4HF1 | Light/medium-duty truck |
| ISUZU | NPR70 | 4HE1 | Light/medium-duty truck |
| ISUZU | NQR70 | 4HE1 | Medium-duty truck |
| ISUZU | NPR71 | 4HG1 | Light/medium-duty truck |
Extended Applications:
| Brand | Model Series | Compatible Engine | Years | Notes |
|---|---|---|---|---|
| ISUZU | NRR | 4HK1 | 1994–2026 | Medium-duty truck |
| ISUZU | NPR | 4HK1 | 1994–2026 | Light/medium-duty truck |
| ISUZU | NQR | 4HK1 | 1994–2026 | Medium-duty truck |
| ISUZU | NPR-HD | 4HK1 | 1994–2026 | Heavy-duty NPR variant |
Primary Engine Applications:
| Engine Model | Primary Application |
|---|---|
| ISUZU 6HE1 | FVR / 700P series |
| ISUZU 4HK1 | ELF700P / NPR / NQR / NRR series |
| ISUZU 4HF1 | NPR66 / ELF700P series |
| ISUZU 4HG1 | NPR71 series |
| ISUZU 4HE1 | NPR70 / NQR70 series |
| ISUZU 6HK1 | ELF700P series |
Extended Compatibility Note: This product is primarily designed for ISUZU FVR / 6HE1 / 700P. Other sources indicate it also fits ISUZU ELF700P, NPR66, NPR70, NQR70, NPR71 models with 4HK1, 4HF1, 4HG1, 4HE1, 6HK1 engines. Please verify the chassis code and engine model on the vehicle nameplate before ordering.
Important Fitment Warnings
- Number Confirmation: This product number is 8-94399605-0 / 8943996050. Same-series number 8-94399605-1 also exists. Verify the specific number on the original part before ordering.
- Surface Cleaning: Thoroughly clean the cylinder head cover and cylinder head mating surfaces before installation — ensure no old gasket residue, oil, or debris.
- Position Confirmation: The rubber plug installs in a specific opening on the cylinder head cover (half-moon position). Confirm correct position during installation.
- Professional Installation: The cylinder head rubber plug is a critical engine sealing component — professional installation is recommended.
Features & Benefits
| Feature | Benefit + Verification Signal |
|---|---|
| OEM Standard Design | Manufactured to ISUZU original specifications — ensures perfect fitment for 6HE1/4HK1/4HF1/4HG1 engines; direct OEM replacement, no modification required |
| Heat & Oil Resistant Rubber Material | Excellent heat and oil resistance for long-term reliable operation under high-temperature engine conditions — prevents oil leakage and protects the valve train |
| IZUMI Brand Professional Supply (20 Years Experience) | Mature production systems and extensive industry experience — over 400 supplier network |
| 100% Factory Quality Inspection | Every piece undergoes strict quality inspection — 100% tested before shipment |
| 24-Hour Quick Response | Response to inquiries within 24 hours with accurate information |
| Broad Vehicle Compatibility | Fits FVR, 700P, ELF700P, NPR66, NPR70, NQR70, NPR71 models and 6HE1, 4HK1, 4HF1, 4HG1, 6HK1 engines |
| Flexible Supply | MOQ 10 pieces, delivery 7–30 days — meets diverse procurement needs |
Quality Control & Verification
| QC Item | Inspection Method | Acceptance Criterion | Frequency |
|---|---|---|---|
| Dimensional accuracy | Special gauges / CMM | OEM standard size | Batch sampling |
| Rubber material hardness | Shore durometer | Standard hardness range | Batch sampling |
| Material temperature resistance | High/low temperature chamber | Per heat-resistant standard | Annual sampling |
| Material oil resistance | Oil immersion test | Per oil-resistant standard | Annual sampling |
| Sealing performance | Pressure test bench | No leakage; stable pressure retention | Batch sampling |
| Visual inspection | Visual | No cracks, bubbles, or deformation | 100% |
| 100% function test | Special inspection equipment | 100% tested | 100% |
Installation & Maintenance Recommendations
⚠️ IMPORTANT SAFETY NOTICE:
The cylinder head rubber plug is a critical engine sealing component — improper installation may cause oil leakage and affect engine lubrication. Professional installation is recommended.
The cylinder head rubber plug is a critical engine sealing component — improper installation may cause oil leakage and affect engine lubrication. Professional installation is recommended.
Installation Guidelines (Reference Workshop Manual):
Preparation:
- Confirm engine model and part number (8-94399605-0)
- Prepare tools: Socket wrench, scraper, cleaner
- Recommended to also prepare: Cylinder head cover gasket
Removing Old Plug:
- Park vehicle on level surface, engage parking brake, and allow the engine to cool
- Remove accessories from the cylinder head cover
- Remove the cylinder head cover
- Remove the old rubber plug
- Thoroughly clean the mating surfaces of the cylinder head cover and cylinder head
Installing New Plug (Installation Sequence):
- Inspect new plug: Check for defects, deformation, or damage
- Clean mating surfaces: Ensure both surfaces are clean and oil-free
- Install new plug: Place the new rubber plug correctly in the designated opening of the cylinder head cover
- Install cover: Position the cylinder head cover — ensure proper plug alignment
- Install bolts: Torque bolts to specification in correct sequence (refer to ISUZU workshop manual)
- Reinstall accessories: Reinstall all removed accessories
Post-Installation Checks (Mandatory):
- Leak check: Start engine and check for oil leakage around the cylinder head cover
- Regular inspection: Periodically inspect the rubber plug for hardening, cracking, swelling, or deformation
Maintenance Schedule:
| Item | Interval | Notes |
|---|---|---|
| Cylinder head cover leak check | Every 10,000 km / each service | Check for oil seepage around the cover |
| Rubber plug visual inspection | Every 20,000 km | Check for hardening, cracking, swelling, or deformation |
| Rubber plug replacement | Upon aging/damage | — |
Packaging & Supply
| Item | Detail |
|---|---|
| Packaging | Neutral packaging or customized per customer request |
| Quantity per package | 1 pc/box (standard shipment packaging) |
| Brand | IZUMI / BZLP |
| Place of Origin | China |
| Customization Options | OEM custom packaging / neutral packaging / private labeling |
| Minimum Order Quantity | Typically 10 pieces |
| Delivery Time | 7–30 days |
| Payment Terms | T/T, Western Union |
| Warranty | Per supplier policy |
| Target Customers | Truck parts wholesalers, heavy/medium-duty truck repair shops, fleet purchasers, export traders |
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